trans-Clomiphene CAS 15690-57-0
| CAS No. | 15690-57-0 |
| Molecular Formula | C26H28ClNO |
| Molecular Weight | 405.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of trans-Clomiphene is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
trans-Clomiphene (CAS 15690-57-0), molecular formula C26H28ClNO and molecular weight 405.96 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, trans-Clomiphene is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 405.96 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), trans-Clomiphene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C26H28ClNO |
| Molecular Weight | 405.96 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related trans Standards
- cis-Clomiphene (CAS 15690-55-8)
- Clomiphene N-Oxide (Cis- and Trans- mixture) (CAS 97642-74-5)
- Clomiphene Impurity 1 (CAS 73404-00-9)
- Clomiphene-d5 N-Oxide (CAS 1346606-55-0)
- Clomiphene Impurity 9 (CAS 14770-94-6)
- Clomiphene-d5 Citrate (CAS 1217200-17-3)
- cis-Clomiphene Citrate (CAS 7619-53-6)
- Clomiphene Impurity 2 HCl (CAS 52047-56-0)
Recommended Standards
- Toremifene impurity 8 (CAS 89778-29-0)
- Clopidogrel Impurity 126 (CAS CATO-C4X-1029126)
- Clomifene (CAS 911-45-5)
- Toremifene impurity 01 (CAS 89778-26-7)
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- 2,8-dimethyl-[1,2,4]triazolo[1,5-a]pyridin-6-amine (CAS 1417637-80-9)
- 4,4'-((Ethane-1,2-diylbis(azanylylidene))bis(methanylylidene))bis(2-methoxyphenol) (CAS 41349-57-9)
- 2-(3-Methoxybenzo[b]thiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1135148-65-0)
- Liraglutide (14-31)TFA Salt (CAS CATO-C4X-19927)
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